Bicycle-brake.



A. LARRIBE.

BICYCLE BRAKE.

APPLICATION FILED IuLY 6,1914.

1, 169,971 Patented Feb. l, 1916.

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j ANTOINE `Lanarte, forl PAR-Is," FRANCE, ASSIGNOR Y To, REN metiers, or PARIS, f renner..y Y f :Bierens-BRAKE.

f To all 'whom tfmaycoivwcrn a fractie-n of a millimeter Be it known vthatl," Ais'rorim LAR-Rien, a citizenv of the Republicof France, residing at 58 Rue Cambronne, Paris, France, have invented' certain new and useful'lmprovements in 'Bicycle-Brakes, of -which the folj lowing is af's'pecification. s

This invention relates to a bicycle brake adapted -to befitted either on thefron't or on the VVback wheel although it is generally preferable to fit it on the front wheel.

This brake which is intended to act on the rim, comprises two'shoes one of'y which is rigidly secured to one of 'the'branches of vthe forlr so thatits friction surface is in close proximity to' 'the rim, for instance at while the other shoe is movable and carried by an arm mounted on the other branch of the fork in such a manner that it can be brought nearer to or separated from the first shoe; when the second shoe is applied on the rim it causes the latter to bend slightly so that it bears on the opposite shoe; both faces of the rim are then subjected to the saine degree of friction. As the position of the stationary shoe can be adjusted as desired with a great amount of precision, the bending of the wheel can be reduced to the desired extent, for instance, toa. fraction of a millimeter so that the wheel is not strained. This disposition enables a very strong and durable brake to be obtained owing to the rigidity of one of the shoes andthe simple control of the other.

The invention resides also in particular dispositions of the controlling and adjusting means for the brake as will be described hereinafter withV reference to the accompanying drawing, in which the figure is a fragmental front elevation showing the application of the brake to the front wheel of a bicycle.

l designates the fixed brake shoe, the lug 2 of which is lixed by a bolt 3 to a flanged collar 4: fitted on one of the branches 5 of the fork of the steering wheel. A slot formed in the lug 2 or in the collar el for the passage of the bolt 3 permits a very accurate adjustment ofthe position of the shoe 1 at a very small distance from the rim 6; the bending of the wheel under the pressure exerted by the opposite shoe will be thus arrested and limited to as small a degree as may be desired, thereby enabling a l .speciacation of Letters4 retest.

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^ "Applies/cion fiieaJuiye,1914. seriarnormame.

f` verya-eiifectire brakingaction -to be obtained.

.withoutl strainingthe wheel. i

The movable shoe 7 is fixed by means of a1.bolt8 to la `'lever 9Y adapted to rock about a pin 10 provided' on a ilanged collar 11 fitted on the other branch 12 of the fork. The movable shoe is positioned in such a manner as to bear on the side of the rim 6 opposite to the shoe 1 when the traction rod ontherike 13 of the-lever 9 is drawn upwardly in opposition to the action exerted bythe spring 11i secured to the shoe 1. Slots formed in the rear end ofthe shoe 7 and the lever 9 for the passage of the bolt 8 permit of adjusting-the position of' the shoe 7 with great precision.

The traction rod 13 in a. hook 15 adapted to interchangeably engage the links of a small chain 16 secured; to the controlling handle 17, the latter being.

fitted pivotally on the handle bar. This permits the lever 9 to be instantly released for instance, when'it is desired to withdraw the wheel from the fork 512 and also to adjust roughly the length of the controlling means. The latter may be accurately adjusted owing to the fact that the rod 13 is divided into (two parts which are adjustably connected by means of an ordinary turnbuckle 18; this sleeve turn buckle is located near to the handlebar so that the rider may operate same without dismounting and adjust the brake while cycling. l

It is obvious that the shoes may be made of any material and fitted in any manner to the fork; its shape as well as that of the lever 9 and the collars l and 11 may be modified. given a shape in accordance with the section of the rim which may be of any type.

The means for controlling the position of the shoes or the position of the axis of the lever or levers, the point at which the spring or springs are secured, the length of the controlling rod and so on, may be varied as desired. lVhere the brake is fitted to the back wheel the rod 13 will be replaced by a suitable transmission mechanism, with or without a flexible cable.

Claims:

1. In a bicycle brake, the combination of a lever pivotally connected to one branch of a fork of the frame and having a slot at one terminal thereof, a shoe having a slot therein, means passing through the slots of terminates at its topv The shoes in particular will bev the lever andA shoe for adjustably connecting the shoe to the lever, and means for op-V shoehaving a slotfformed therein, means passing through the slots of the leverk and movable shoe for fastening them together, and means for operating the 'lever for causing the movable shoe to be forced into engagement With the rim of the Wheel and press therim into Contact With the fixed shoe, whereby the rotation of the `Wheel may v be retarded. v

3. In a bicycle brake,V the combination with the fork of a frame, of a collar conrnected to one branch of they fork, a fixed Copies of this` patent may be obtained for five cents each, by addressing the Commissioner of Patents. v 'Y vsaidrforl, and'h'avingl passing throughthe yslot and connected to connected to oneA shoe'adapted to be positioned for engagement with the rim of a Wheel straddled by a slot therein, means the collar for adjustably fasteningV the iiXed shoe to the collar7 a lever ed to the other branch of the fork," and provided Vwith a slot at one terminal thereof, av movable vshoe having 'a passing through the lever for connecting the shoe 'to the lever, and adjustable means connected tothe other terminal of the lever for actuating the lever to cause the movable shoe to be forced into pivotally connectslot therein, means Y slots of the shoe and Y engagement With the rim of the Wheel and press the rim into engagement with the fixed y the rotation of the Wheel may shoe, whereby be retarded@ y i In testimony whereof-I aHiX `myA signa-` ture in presence of two Witnesses.

, lVitnesses:

CHAS. I. PREssLY, EMILE LEDRET.

Washington, D. C.

ANTorNE LARIBE. 

